API Reference > imodeljs-markup > MarkupTools > ModifyHandle ModifyHandle Class Classes added to HTMLElements so they can be customized in CSS by applications. A "modify handle" is a visible position on the screen that provides UI to modify a MarkupElement. Methods Name Description constructor(handles: Handles): ModifyHandle addTouchPadding(visible: Element, handles: Handles): Element modify(ev: BeButtonEvent): void Abstract perform the modification given a current mouse position. onClick(_ev: BeButtonEvent): void setMouseHandler(target: Element): void setPosition(): void Abstract set the position for this handle on the screen given the current state of the element startDrag(_ev: BeButtonEvent, makeCopy: boolean = false): void the mouse just went down on this handle, begin modification. startModify(makeCopy: boolean): void Properties Name Type Description handles Handles vbToStartTrn Transform Defined in markup/src/SelectTool.ts Line 27 Last Updated: 11 June, 2024